Frequencies for first 10,000 rows of mancarec variable in namcs2003 dataset :

   how many |
    managed |
       care |
 contracts? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        354        3.54        3.54
          1 |        694        6.94       10.48
          2 |      1,103       11.03       21.51
          3 |      4,300       43.00       64.51
          4 |      3,549       35.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016